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From 8c7c97d1b3af8c99af43dcaff7ae1d9315a03835 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Fabiano=20Fid=C3=AAncio?= <fidencio@redhat.com>
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Date: Tue, 21 Mar 2017 20:56:38 +0100
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Subject: [PATCH 51/54] DLINKLIST: Add DLIST_FOR_EACH_SAFE macro
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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This macro, as DLIST_FOR_EACH, iterates over the whole list. The main
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difference between both is that in the _SAFE version the pointer to the
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next list node is stored, allowing us to delete the current node safely.
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Signed-off-by: Fabiano Fidêncio <fidencio@redhat.com>
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Reviewed-by: Sumit Bose <sbose@redhat.com>
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Reviewed-by: Pavel Březina <pbrezina@redhat.com>
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---
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src/util/dlinklist.h | 5 +++++
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1 file changed, 5 insertions(+)
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diff --git a/src/util/dlinklist.h b/src/util/dlinklist.h
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index 4f6aef830e914c22654970081263d43461c1750f..017c60468e66dbec15724d5f4832da412f42136b 100644
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--- a/src/util/dlinklist.h
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+++ b/src/util/dlinklist.h
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@@ -147,4 +147,9 @@ do { \
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#define DLIST_FOR_EACH(p, list) \
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for ((p) = (list); (p) != NULL; (p) = (p)->next)
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+#define DLIST_FOR_EACH_SAFE(p, q, list) \
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+ for ((p) = (list), (q) = (p) != NULL ? (p)->next : NULL; \
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+ (p) != NULL; \
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+ (p) = (q), (q) = (p) != NULL ? (p)->next : NULL)
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+
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#endif /* _DLINKLIST_H */
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--
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2.9.3
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